Calibres of alarm weapons.The metric calibres are classed before the calibres originally designated in inches. The classification is in growing and in alphabetical order according to the designation of the calibre.Transducer method

Notice: For conformal or tangential transducers the location (M) is that defined by the manufacturer.

Notice: - The designation "Blanc" can be indicated in one of the languages used by the C.I.P. Member Countries or can be replaced by the letter K
- P = pressure barrel pistol type
- R = pressure barrel revolver type